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Nested transactions. There is still much left to do, especially on the

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performance front, but with feature freeze upon us I think it's time to
drive a stake in the ground and say that this will be in 7.5.

Alvaro Herrera, with some help from Tom Lane.
This commit is contained in:
Tom Lane
2004-07-01 00:52:04 +00:00
parent 4c9aa572fa
commit 573a71a5da
74 changed files with 4516 additions and 1144 deletions
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11
src/backend/commands/variable.c
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@ -9,7 +9,7 @@
*
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/commands/variable.c,v 1.97 2004/05/26 04:41:13 neilc Exp $
* $PostgreSQL: pgsql/src/backend/commands/variable.c,v 1.98 2004/07/01 00:50:12 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -470,10 +470,17 @@ show_timezone(void)
const char *
assign_XactIsoLevel(const char *value, bool doit, GucSource source)
{
if (doit && source >= PGC_S_INTERACTIVE && SerializableSnapshot != NULL)
if (doit && source >= PGC_S_INTERACTIVE)
{
if (SerializableSnapshot != NULL)
ereport(ERROR,
(errcode(ERRCODE_ACTIVE_SQL_TRANSACTION),
errmsg("SET TRANSACTION ISOLATION LEVEL must be called before any query")));
if (IsSubTransaction())
ereport(ERROR,
(errcode(ERRCODE_ACTIVE_SQL_TRANSACTION),
errmsg("SET TRANSACTION ISOLATION LEVEL must not be called in a subtransaction")));
}
if (strcmp(value, "serializable") == 0)
{